• C P Subbe, E Williams, L Fligelstone, and L Gemmell.
• Department of Critical Care, Wrexham Maelor Hospital, Wrexham, UK. csubbe@hotmail.com
• Ann R Coll Surg Engl. 2005 Jul 1; 87 (4): 226-32.

IntroductionPatients at risk of catastrophic deterioration are often identified too late. Delayed identification of sick patients and delayed referral to intensive care units might be associated with poor outcomes. The goal of the review is to assess the potential impact of systems that enable early detection of critically ill surgical patients.Materials And MethodsA Medline search was performed in September 2004. Other articles were identified using the bibliographies of papers found through Medline. All interventional trials reviewing the effect of Critical Care Outreach and Medical Emergency Teams were reviewed.ResultsThere is evidence that simple algorithms based on bedside observations can identify a large proportion of sick patients on general wards. Non-randomised studies have shown mixed results on impact of these interventions on mortality, cardiopulmonary arrests and intensive care admissions. The majority of studies do not specifically address surgical patients. A ward-based randomised trial from the UK seems to suggest improved mortality following the introduction of a Critical Care Outreach service with an Early Warning Score.Discussion And ConclusionThe literature about Critical Care Outreach and Medical Emergency teams is characterised by methodological weaknesses. However there is a common suggestion that early detection might improve outcome of critically ill surgical patients.

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